Glasses-Goggles

[PIAA REF]

I was asked this question and have yet been able to find documentation. If a player who wears eye-protective goggles (more so for protection than eye correction) Is he permitted to pull the glasses up and leave them on his head while he shoots a free-throw. I guess the players glasses were a little scratched and felt more comfortable to not look throw them while shooting free throws. Is there any rule or case that gives the correct ruling on this matter.

Thanks